[Gate-users] How can I know the initial energy of the gammas?

[Liu, Xiaodong]

Dear gaters,

I am simulating the tracer of Br-76. This isotope has a lot of cascade gammas at the time of annihilation. The initial energies of those cascade gamma are not 511keV. But they also fall into the windows of coincidence. I don't know how to distinguish those cascade gamma from the annihilation. One method is to know the initial energy of the gammas. Could I be adviced how to know the initial energy of the gammas?
Thanks.

Xiaodong Liu



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